When it comes to ranking traffickers, there is usually at least a statement from the State Department of Justice Department talking about cooperation and unified law-enforcement efforts, etc. This time? Nada.

What is available is a single document filed here in 2011 to request he be handed over. It offers a rare look behind the scenes, and is posted below.

UPDATE: While Rejon Aguilar – and top level drug traffickers are named in a hefty indictment out of Washington, DC, as of the close of business Friday, there was still no notation in the public record of him being brought into a U.S. courtroom. (Criminal case 08-057)

According to the request, which lays out the basics of evidence against Rejon Aguilar, U.S. authorities were assisted by captured technology whiz. Jose Luis Del Toro Estrada, who helped build a secret communications network for traffickers.

Del Toro Estrada pleaded guilty in Houston three years ago as part of a deal that would bring him leniency in exchange for cooperation.

There are more than a dozen entries that are sealed in Del Toro’s court file, and he was released from the U.S. Bureau of Prisons in June after serving 52 months in a U.S. federal prison.

Del Toro apparently helped authorities identify the recorded voices of Rejon as well as other members of the cartel network.

The affidavit notes how on several occasions U.S. authorities were secretly listening in as top Zeta bosses discussed moving ton-sized loads of marijuana and cocaine.

There is nothing about the attack of ICE agent Jaime Zapata and his partner, Victor Avila, who were run off a road in Mexico

Jaime Zapata

Juan Garcia Abrego, a former Gulf Cartel leader was caught in Mexico, shipped to the United States, and convicted by a

Houston jury and is serving multiple life sentences.

The leader who came after him, Osiel Cardenas Guillen, was also sent to the United States, but instead pleaded guilty here as part of an agreement for leniency, and will be released in 2025.

Both are at the so-called Supermax federal prison in Colorado.

Where Rejon Aguilar will turn up is still anyone’s guess.

The federal high-security prison in Florence, Colo., on May 22, 2009. People in the area have strong opinions about President Barack Obama's proposal to transfer many Guantanamo inmates to high-security prisons in the United States. (Kevin Moloney/The New York Times)